sanjibansg commented on a change in pull request #12560:
URL: https://github.com/apache/arrow/pull/12560#discussion_r825583210
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File path: python/pyarrow/_dataset.pyx
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@@ -245,9 +245,10 @@ cdef class Dataset(_Weakrefable):
The columns will be passed down to Datasets and corresponding data
fragments to avoid loading, copying, and deserializing columns
that will not be required further down the compute chain.
- By default all of the available columns are projected. Raises
- an exception if any of the referenced column names does not exist
- in the dataset's Schema.
+ By default all of the available columns along with the augmented
fields
+ such as `batch_index`, `fragment_index`, `last_in_fragment` and
`filename`
+ are projected. Raises an exception if any of the referenced column
names
Review comment:
Yes, sorry I missed that, changed the doc now, can you check again
please.
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